Assetto Corsa V1.10.2 -

The v1.10.2 update introduced significant Balance of Performance (BoP) changes, particularly for the GT4 class. :

: While traction control (TC) is effective, running with TC off can yield faster lap times for experienced drivers. Assetto Corsa v1.10.2

If you are running the original Assetto Corsa, v1.10.2 is an older version. Modern play requires specific community tools to modernize the experience. The v1